The answer is that they're still coming, but we couldn't exactly find out when. In fact, just about everyone at a booth at Ignite that had anything to do with it (Visio, Project, Desktop Bridge, etc.) acknowledged that it's definitely on the way, and some of them even said that they've used it on their own PCs.

But with Windows 10 S PCs coming to businesses, this would be something that has to at least be in preview sooner than later. The current expiration date for the Office 365 Personal and Home previews is January 20, so we'll likely hear more between now and then.